Ok I have a 1994 HB OBDI and i need to get the OBDII B18B in what are the issues. I have the complete LS integra OBDII B18B so i got the ecu harness engine and all......do i rip my OBDI wiring out with engine and replace everything with OBDII???....sorry for the confusion earlier.

 

you mean OBD1 right? Are you using the OBD2 LS wiring harness or the OBD1

 

fawk all that, get obd1 injectors, dizzy, ecu and just use your stock harness. swap takes like 5 hours...its super easy if you dont try and cross mojinate the obd's